They shall get no powder, if I can help it.
It is a brown powder which is readily decomposed by boiling water.
When the king's soldiers heard about this powder, they made up their minds to go out and get it for themselves.
I can only assume the powder you found in my pocket was powdered sugar.
From the bottom of this sea they have been raised to form the dry lands along the shores of Suffolk, whence they are now extracted as articles of commercial value, being ground to powder in the mills of Mr [afterwards Sir John] Lawes, at Deptford, to supply our farms with a valuable substitute for guano, under the accepted name of coprolite manure."
The wind had fallen and black clouds, merging with the powder smoke, hung low over the field of battle on the horizon.
And then I found the powder in your pocket.
In 1536 it was almost totally destroyed by fire, and in 1654 largely ruined by the explosion of a powder magazine.
Once beyond access to the river below, the seldom-used path presented an unbroken cover of fresh white, now blanketed in more than a foot of fresh powder, as it followed the large pipe toward the reservoir.
It is a bluish-black powder which at high temperatures decomposes into the metal, dioxide and oxygen.
Ozma sprinkled me with a magic powder, and I just had to live.
Maybe it was inevitable at that point that some spark would set off the powder keg of Europe.
(1617); a lunatic asylum; the Van Renswoude orphanage, the theatre, a school of design, the powder magazine and the state arsenal, originally a warehouse of the East India Company, and now used as a manufactory of artillery stores.
It is a dark brown powder.
If 127 parts of iodine, which is an almost black solid, and loo parts of mercury, which is a white liquid metal, be intimately mixed by rubbing them together in a mortar, the two substances wholly disappear, and we obtain instead a brilliant red powder quite unlike the iodine or the mercury; almost the only property that is unchanged is the weight.
Under Francesco Morosini the Venetians again attacked Athens in September 1687; a shot fired during the bombardment of the Acropolis caused a powder magazine in the Parthenon to explode, and the building was rent asunder.
By making expectations explicit and public, these agreements reduce the number of sparks that can set off the powder keg of war.
She bent over and picked it up, discovering that it had a little white powder in the bottom.
The powder is soluble in alcohol and strong solutions of alkalis, such as ammonia.
It is a white powder, very slightly soluble in water, and possesses acid properties.
Dean found the deep powder beyond his limited abilities and Donald Ryland seemed content to stay with him and ski the packed trails, sometimes cutting off to test the moguls and deeper snow at the trail's edge.
I never used powder or cover-up because there wasn't any for someone with skin as pale as mine.
He swept up the pills and crushed them in his hand, then released the powder into the sink.
It is a brown coloured powder which is stable in air, but gives a higher oxide when heated.
4), in an early form, consisted of a cell of insulating material having at its bottom a flat-headed platinum screw G; on the top of G was a layer of carbon powder C, on the top of that a platinum disk D, and above that again, forming the cover of the cell, a disk of ivory B, held in position by a ring E.
It is often covered with a white powder easily removed by wiping.
coriander powder and stir for a further full minute.
It's made of the white cornmeal of the South, smooth and fine as face powder.
Firstly, certain airbrush cosmetics can actually give a matte, powdered look without the need to use powder to set the make-up.
It may be obtained as a dark brown amorphous powder by placing a mixture of io parts of the roughly powdered oxide with 6 parts of metallic sodium in a red-hot crucible, and covering the mixture with a layer of well-dried common salt.
a dark grey powder by reducing the chloride with potassium,.
In another form the plumbago powder was worked into a button cemented together with syrup and other substances.
It is a brown powder which on heating in air loses sulphur and leaves a residue of the disulphide.
crestfallen looks, having wasted one ball and one charge of powder.
Some of the king's soldiers are going to Concord to get the powder that is there.
One way that society keeps a lid on the powder keg of tension between the rich and poor is through the welfare state.
The general had a fit of coughing as a result of shouting and of the powder smoke and stopped in despair.
The doctors were of use to Natasha because they kissed and rubbed her bump, assuring her that it would soon pass if only the coachman went to the chemist's in the Arbat and got a powder and some pills in a pretty box for a ruble and seventy kopeks, and if she took those powders in boiled water at intervals of precisely two hours, neither more nor less.
The guns of that battery were being fired continually one after another with a deafening roar, enveloping the whole neighborhood in powder smoke.
Amid the powder smoke, slowly dispersing over the whole space through which Napoleon rode, horses and men were lying in pools of blood, singly or in heaps.
We can prepare, in the laboratory, a white powder that proves to be calcium carbonate, that is, it appears to be wholly composed of carbon dioxide and lime.
Scarcely had Pierre laid his head on the pillow before he felt himself falling asleep, but suddenly, almost with the distinctness of reality, he heard the boom, boom, boom of firing, the thud of projectiles, groans and cries, and smelled blood and powder, and a feeling of horror and dread of death seized him.
It is an indigo-blue powder, soluble in hydrochloric acid, but insoluble in dilute nitric and sulphuric acids.
His opponent would be disposed to say that the iodine and the mercury ceased to exist when the red powder was formed, that they were components but not constituents of it.
Cobalt sesquioxide, Co 2 0 3, remains as a dark-brown powder when cobalt nitrate is gently heated.
Various preparations in form of powder are used for toilet purposes.
For this reason they had bought some powder and stored it at Concord,[Footnote: Concord (_pro_. kong'krd).] nearly twenty miles away.
One has suggested, that if such a "leach-hole" should be found, its connection with the meadow, if any existed, might be proved by conveying some colored powder or sawdust to the mouth of the hole, and then putting a strainer over the spring in the meadow, which would catch some of the particles carried through by the current.
It is a brown-black powder soluble in hydrochloric acid, chlorine being simultaneously liberated.
It is a black amorphous powder soluble in concentrated sulphuric and hydrochloric acids, and when in the moist state readily oxidizes on exposure.
phosphates and chemical manures; calcitim carbide; explosivi powder; dynamite and other explosives.
Pain rippled through him and another wave of power radiated off him, turning the boulders nearby into powder.
The atomist has an easy answer; he says that the new body is made up by the juxtaposition of the atoms of iodine and mercury, which still exist in the red powder.
As prepared by the reduction of the oxide it is a grey powder.
Imports include woven goods, metals, ironware, machinery, tea, wines and spirits, mineral oils, opium, paper, and arms and powder.
There are certainly at least two resins in the powder (which is known officially as Podophylli resina), one of them being soluble and the other insoluble in ether.
After the vigorous reaction has ceased and all the sodium has been used up, the mass is thrown into dilute hydrochloric acid, when the soluble sodium salts go into solution, and the insoluble boron remains as a brown powder, which may by filtered off and dried.
Phys., 1895, 6, p. 296) heats three parts of the oxide with one part of magnesium powder.
5 He proposed to introduce into the circuit a cell containing carbon powder, the pressure on which could be varied by the micro- vibrations of a diaphragm.
In the specification of the patent applied for on the list of July 1877 he showed a sketch of an instrument which consisted of a diaphragm, with a small platinum patch in the centre for an electrode, against which a hard point, made of plumbago powder cemented together with india-rubber and vulcanized, was pressed by a long spring, the pressure of the carbon against the platinum disk being adjusted by a straining screw near the base of the spring.
The celebrated Gascoigne's powder, which was sold as late as the middle of the 19th century in the form of balls like sal prunella, consisted of equal parts of crabs' eyes," the black tips of crabs' claws, Oriental pearls, Oriental bezoar and white coral, and was administered in jelly made of hart's horn, but was prescribed by physicians chiefly for wealthy people, as it cost about forty shillings per ounce.
Molybdenum monoxide, MoO.n(H 2 O), is a black powder obtained when the dichloride is boiled with concentrated potash solution.
It is a white powder, which turns pale yellow on heating, and melts at a red heat.
It is a yellow amorphous powder which is soluble in dilute alkalis, the solution on acidification giving an hydroxide, C1 4 Mo 3 (OH) 2, which is soluble in nitric acid, and does not give a reaction with silver nitrate.
It is a black crystalline powder, resembling graphite in appearance.
When ground they give a yellowish-red powder.
Coprolite is reduced to powder by powerful mills of peculiar construction, furnished with granite and buhrstones, before being treated with concentrated sulphuric acid.
It is a yellow, microcrystalline powder, soluble in water, alcohol and chloroform, and forming readily decomposed salts with acids.
When inhaled, the powder causes violent sneezing, similar to that produced by veratrine itself, which is, as already stated, a constituent of the corm.
The addition of more acid would produce an additional supply of sulphur (by the action of the H2S203 on the dissolved H 2 S); but this thiosulphate sulphur is yellow and compact, while the polysulphide part has the desired qualities, forming an extremely fine, almost white, powder.
News, 1902, 86, p. 5) obtained a substance of composition S312 (which in all probability is a chemical individual) as a reddish-coloured powder by the action of sulphuretted hydrogen on a solution of iodine trichloride.
From the heating of native calcium sulphate and carbon is obtained calx sulphurata (U.S. and B.P.), or sulphurated lime, a greyish-white powder.
In medieval times the Propylaea served (Redrawn from the Athenische Mitteilungen by permission of the Kaiserliches Archaeologisches Institut.) as the palace of the dukes of Athens; they were much damaged by the explosion of a powder magazine in 1656.
The chief command of the newly organized army was also given to him, but previously, at the head of a body of militia, he had demanded satisfaction for powder removed from the public store by order of Lord Dunmore, the royal governor, with the result that £330 was paid in compensation.
from the Arabic); the use of powder and of glass mirrors, and also of the rosary itself - all these things came to Europe from the East and as a result of the Crusades.
About 1645 a powder magazine in the Propylaea was ignited by lightning and the upper portion of the structure was destroyed.
Fusion with caustic potash converts it into a mixture of potassium ruthenate and ruthenium sesquioxide, Ru 2 0 3, which is a black, almost insoluble powder.
An oxide of composition Ru 4 0 9 is obtained as a black hydrated powder when the peroxide is heated with water for some time.
It is a red-brown crystalline powder, which is soluble in water.
In 1593 Elizabeth incorporated it, and gave the burgesses a town hall and court of pie powder.
The raw materials used in the manufacture are: (I) iron-free kaolin, or some other kind of pure clay, which should contain its silica and alumina as nearly as possible in the proportion of 2SiO 2: Al203 demanded by the formula assigned to ideal kaolin (a deficit of silica, however, it appears can be made up for by addition of the calculated weight of finely divided silica); (2) anhydrous sulphate of soda; (3) anhydrous carbonate of soda; (4) sulphur (in the state of powder); and (5) powdered charcoal or relatively ash-free coal, or colophony in lumps.
By treating blue ultramarine with silver nitrate solution, "silverultramarine" is obtained as a yellow powder.
The use of corrosive sublimate is not, however, recommended, as it forms on drying a fine powder which when the plants are handled will rub off and, being carried into the air, may prove injurious to workers.
The calcium salt, CaN 2 O 2.4H 2 O, formed by the action of calcium chloride on the silver salt in the presence of a small quantity of nitric acid, is a lustrous crystalline powder, almost insoluble in water but readily soluble in dilute acids.
Gelatin forms a white amorphous powder; the commercial product, however, generally forms glassy plates.
These globular bodies are, in fact, merely the more coherent portions of a perlite; the rest of the rock falls down in a fine powder setting free the glassy spheres.
Scrap mica is ground to powder or used in the manufacture of micanite.
Paramide is a white amorphous powder, insoluble in water and alcohol.
While he also prevents interruption of the operation by means of water-jackets, he uses hot-blast, and produces, besides metallic lead, large volumes of lead fumes which are drawn off by fans through long cooling tubes, and then forced through suspended bags which filter off the dust, called "blue powder."
The distillation of 1000 lb charge lasts 5-6 hours, requires 500-600 lb coke or 30 gallons reduced oil, and yields about to% metallic zinc and I% blue powder - a mixture of finely-divided metallic zinc and zinc oxide.
The suboxide, Pb 2 0, is the first product of the oxidation of lead, and is also obtained as a black powder by heating lead oxalate to 300° out of contact with air.
Lead dioxide, Pb0 2, also known as "puce oxide," occurs in nature as the mineral plattnerite, and may be most conveniently prepared by heating mixed solutions of lead acetate and bleaching powder until the original precipitate blackens.
Lead sesquioxide, Pb203, is obtained as a reddish-yellow amorphous powder by carefully adding sodium hypochlorite to a cold potash solution of lead oxide, or by adding very dilute ammonia to a solution of red lead in acetic acid.
Red lead or triplumbic tetroxide, Pb304, is a scarlet crystalline powder of specific gravity 8.6-9.1, obtained by roasting very finely divided pure massicot or lead carbonate; the brightness of the colour depends in a great measure on the roasting.
Lead fluoride, PbF2, is a white powder obtained by precipitating a lead salt with a soluble fluoride; it is sparingly soluble in water but readily dissolves in hydrochloric and nitric acids.
White lead is an earthy, amorphous powder.
(3) Plumbi Carbonas, white lead, a mixture of the carbonate and the hydrate, a heavy white powder insoluble in water; it is not used internally, but from it is made Unguentum Plumbi Carbonatis, strength 1 in so parts of paraffin ointment.
(4) Plumbi Iodidium, a heavy bright yellow powder not used internally.
When heated they liquefy; and if the heating be continued, the water of crystallization is driven off, the salt froths and^swells, and at last an amorphous powder remains.
During this exposure it is kept continually moistened with water, so that it ultimately falls to a very fine powder.
This powder is then lixiviated with hot water, the liquor decanted, and the alum allowed to crystallize.
Industry, 1898, 1 9, p. 543) by reducing the oxide with aluminium powder.
As obtained by the reduction of the chloride, it is a steel grey powder of specific gravity 7 06.
Columbium hydride, CbH, is obtained as a greyish metallic powder, when the double fluoride, CbF 5, 2 KF, is reduced with sodium.
tetroxide, Cb204, is obtained as a black powder when the pentoxide is heated to a high temperature in a current of hydrogen.
It is a white amorphous infusible powder, which when strongly heated in sulphuretted hydrogen, yields an oxysulphide.
1899, 20, p. 34 1), as a yellow amorphous powder by the action of dilute sulphuric acid on the potassium salt, which is formed when columbic acid is fused in a silver crucible with eight times its weight of caustic potash (loc. cit.).
Columbium oxysulphide, CbOS 3, is obtained as a dark bronze coloured powder when the pentoxide is heated to a white heat in a current of carbon bisulphide vapour; or by gently heating the oxychloride in a current of sulphuretted hydrogen.
From this group came the young Bosnian Serb students Princip, Cabrinovic, Graben and others, who murdered the Archduke Francis Ferdinand and the Duchess of Hohenberg at Sarajevo on June 28 1914, and thus lit a spark in the European powder magazine.
Uranous Compounds.-Uranium dioxide, UO 2 (Berzelius's metal), is a brown to copper-coloured powder, obtained by heating U308 or uranyl oxalate in hydrogen.
By electrolysis it yields uranium dioxide as a pyrophoric powder, and peruranic hydroxide, U04.2H20, when treated with hydrogen peroxide.
Exposed to air this mixture is oxidized to the pigment uranium red, U6(NH4)2S09, which is a fine blood-coloured amorphous powder.
The veinstuff is broken small either by hand or in rock-breakers, and stamped to fine powder in stamp mills, which are practically large mechanically-worked pestles and mortars, the stamp proper weighing from 500 to moo lb.
The metal is dimorphous: by cooling molten tin at ordinary air temperature tetragonal crystals are obtained, while by cooling at a temperature just below the melting point rhombic forms are produced, When exposed for a sufficient time to very low temperatures (to - 39° C. for 14 hours), tin becomes so brittle that it falls into a grey powder, termed the grey modification, under a pestle; it indeed sometimes crumbles into powder spontaneously.
Stannous sulphide, SnS, is obtained as a lead-grey mass by heating tin with sulphur, and as a brown precipitate by adding sulphuretted hydrogen to a stannous solution; this is soluble in ammonium polysulphide, and dries to a black powder.
Stannic sulphide, SnS 2, is obtained by heating a mixture of tin (or, better, tin amalgam), sulphur and sal-ammoniac in proper proportions in the beautiful form of aurum musivum (mosaic gold) - a solid consisting of golden yellow, metallic lustrous scales, and used chiefly as a yellow "bronze" for plaster-of-Paris statuettes, &c. The yellow precipitate of stannic sulphide obtained by adding sulphuretted hydrogen to a stannic solution readily dissolves in solutions of the alkaline sulphides to form thiostannates of the formula M 2 SnS 31 the free acid, H2SnS3, may be obtained as an almost black powder by drying the yellow precipitate formed when hydrochloric acid is added to a solution of a thiostannate.
Brewing, brickmaking and the manufacture of cement are also carried on, and there are several large powder mills in the vicinity.
One grain of saffron rubbed to powder with sugar and a little water imparts a distinctly yellow tint to ten gallons of water.
In 1893, as the result of an attempt to make diamond by the action of sulphur on highly carburetted cast iron at 450°-500° C. he obtained a black powder too small in quantity to be analysed but hard enough to scratch corundum.
The grateful perfumed powder abir or rand y is composed either of rice, flour, mango bark or deodar wood, camphor and aniseed, or of sandalwood or wood aloes, and zerumbet, zedoary, rose flowers, camphor and civet.
The principal item in mining cost is that of labour, which is expended chiefly in breaking down the mineral, either by the use of hand tools or with the aid of powder.
The ore is mined in the ordinary way, by pick and shovel if soft, or by the aid of powder if necessary, and the funnel-shaped bottom of the pit is maintained at such an angle that little or no shovelling is required to bring the excavated material to the shaft.
In mining operations explosives are used on a large scale and the powder gases contain large quantities of the very poisonous gas, carbon monoxide, a small percentage of which may cause death, and even a minute percentage of which in the air will seriously affect the health.
but it is almost impossible to secure obedience to these regulations on the part of the miners, who are, as a rule, both careless and reckless in their use of powder.
The political convulsions of Italy in 1799 brought Breislak to Paris, where he remained until 1802, when, being appointed inspector of the saltpetre and powder manufactories near Milan, he removed to that city.
It is a yellow powder, soluble in hot water.
brown coloured powder, the crystalline variety being grey, but it presents somewhat different appearances according to the method used for its preparation.
Silicon nitrogen hydride, SiNH, is a white powder formed with silicon amide when ammonia gas (diluted with hydrogen) is brought into contact with the vapour of silicon chloroform at -10° C. Trianilino silicon hydride, SiH (NHC 6 H 5) 3, is obtained by the action of aniline on a benzene solution of silicon chloroform.
Among manufactures are foundry and machine-shop products, powder, stoves, furniture, hosiery, &c. The borough owns the water-works.
These " weathering " agents not only act upon stones of buildings, but upon rocks of all kinds, reducing them sooner or later into a more or less fine powder.
This substance absorbs and combines with water very greedily, at the same time becoming very hot, and falling into a fine dry powder,' calcium hydroxide or slaked lime, which when left in the open slowly combines with the carbon dioxide of the air and becomes calcium carbonate, from which we began.
The quicklime should be placed in small heaps and covered with soil if possible until it is slacked and the lumps have fallen into powder, after which it may be spread and harrowed in.
Great care is necessary to prevent the heaps from becoming too hot, in which case the clay becomes baked into hard lumps of brick-like material which cannot be broken up. With careful management, however, the clay dries and bakes, becoming slowly converted into lumps which readily crumble into a fine powder, in which state it is spread over and worked into the land at the rate of 40 loads per acre.
By whichever way treated, the tobaccoleaf after curing is brittle and cannot be handled without crumbling to powder.
It is a white powder, and is insoluble in water.
In these arrangements, which were similar if not identical, the furnace charge was crushed to a fine powder and passed through two or more electric arcs in succession.
The metal thus produced formed a dark brown amorphous powder resembling iron as obtained by the reduction of its oxide in hydrogen.
Ti 3 N 4 is a copper-coloured powder obtained by heating the ammonio-chloride TiC1 4.4NH 3 in ammonia.
TiN 2 is a dark blue powder obtained when the oxide is ignited in an atmosphere of ammonia; while TiN is obtained as a bronze yellow mass as hard as the diamond by heating the oxide in an atmosphere of nitrogen in the electric furnace.
Titanium monoxide, TiO, is obtained as black prismatic crystals by heating the dioxide in the electric furnace, or with magnesium powder.
When ignited in a current of hydrogen it yields tiianium trifluoride, TiF 3, as a violet powder.
Titanium dichloride, TiC1 21 obtained by passing hydrogen over the trichloride at a dull red heat, is a very hygroscopic brown powder which inflames when exposed to air, and energetically decomposes water.
It is a white amorphous powder which resembles lime in its general character.
A strontium boride, SrB6, was obtained as a black crystalline powder by H.
high, in which a powder magazine is erected.
Evidently the idea of the great Yokoya experts, the originators of the style, was to break away from the somewhat formal monotony of ordinary engraving, where each line performs exactly the same function, and to convert the chisel into an artists i It is first boiled in a lye obtained by lixiviating wood ashes; it is next polished with charcoal powder; then immersed in plum vinegar and salt; then washed with weak lye and placed in a, tub of water to remove all traces of alkali, the final step being to digest in a boiling solution of copper sulphate, verdigris and water.
Baker City lies in the valley of Powder river, at the base of the Blue Mountains, and has an elevation of about 3440 ft.
It is a crystalline powder difficultly soluble in water and melting at 210° C. (with decomposition).
It is a white crystalline powder which is almost insoluble in cold water.
bleaching powder, is very good, or of a I% solution of permanganate of potash, or Condy's fluid.
The word "alcohol" is of Arabic origin, being derived from the particle al and the word kohl, an impalpable powder used in the East for painting the eyebrows.
In 1609 a charter of incorporation provided for a mayor, recorder, six capital burgesses and seventeen assistants and courts of record and pie powder.
It is insoluble in hydrochloric, nitric and sulphuric acids, but dissolves in aqua regia - a mixture of hydrochloric and nitric acids - and when very finely divided in a heated mixture of strong sulphuric acid and a little nitric acid; dilution with water, however, precipitates the metal as a violet or brown powder from this solution.
It forms a dark-violet precipitate which dries to a greyish-violet powder.
This oxide is slightly basic. Auric oxide, Au203, is a brown powder, decomposed into its elements when heated to about 250° or on exposure to light.
Aurous chloride, AuCl, is obtained as a lemon-yellow, amorphous powder, insoluble in water, by heating auric chloride to 185°.
Auric chloride, or gold trichloride, AuC1 3, is a dark rubyred or reddish-brown, crystalline, deliquescent powder obtained by dissolving the metal in aqua regia.
Aurous bromide, AuBr, is a yellowish-green powder obtained by heating the tribromide to 140°; auric bromide, AuBr 3, forms reddish-black or scarlet-red leafy crystals, which dissolve in water to form a reddishbrown solution,and combines with bromides to form bromaurates corresponding to the chloraurates.
Aurous iodide, Aul, is a light-yellow, sparingly soluble powder obtained, together with free iodine, by adding potassium iodide to auric chloride; auric iodide, Au13, is formed as a dark-green powder at the same time, but it readily decomposes to aurous iodide and iodine.
Aurous sulphide, Au 2 S, is a brownishblack powder formed by passing sulphuretted hydrogen into a solution of potassium aurocyanide and then acidifying.
Auric sulphide, Au 2 S 31 is an amorphous powder formed when lithium aurichloride is treated with dry sulphuretted hydrogen at - 10°.
Thus by adding acid sodium sulphite to, or by passing sulphur dioxide at 50° into, a solution of sodium aurate, the salt, 3Na 2 SO 3 Au 2 SO 3.3H20 is obtained, which, when precipitated from its aqueous solution by alcohol, forms a purple powder, appearing yellow or green by reflected light.
In all cases the quartz or other vein stuff must be reduced to a very fine powder as a preliminary to further operations.
There have also been introduced processes in which the chlorine is generated in the chloridizing vat, the reagents used being dilute solutions of bleaching powder and an acid.
Elsner recognized, in 1846, the part played by the atmosphere, and in 1879 Dixon showed that bleaching powder, manganese dioxide, and other oxidizing agents, facilitated the solution.
Thus obtained it is a yellow powder, soluble in the mineral acids to form soluble salts, which are readily precipitated as basic salts when the solution is diluted.
The hydrate, Bi(OH) 3 i is obtained as a white powder by adding potash to a solution of a bismuth salt.
The dichloride, BiC1 2, is obtained as a brown crystalline powder by fusing the metal with the trichloride, or in a current of chlorine, or by heating the metal with calomel to 250°.
Bismuth trifluoride, BiF3, a white powder, bismuth tribromide, BiBr 3, golden yellow crystals, bismuth iodide, Bi13, greyish-black crystals, are also known.
Bismuth sulphate, B12(S04)3, is obtained as a white powder by dissolving the metal or sulphide in concentrated sulphuric acid.
The physical properties of the powder also give it a mild astringent action.
It may be obtained by heating tellurium bismuth with sodium carbonate, lixiviating the fused mass with water, filtering, and exposing the filtrate to air, when the tellurium is gradually precipitated as a grey powder (J.
In 1793 large cavalry barracks were erected upon it, and it is also the site of extensive powder mills.
Tantalum pentoxide, Ta205, is a white amorphous infusible powder, or it may be crystallized by strongly heating, or by fusing with boron trioxide or microcosmic salt.
When a quantity of a fine white powder is thrown in, the light reflected by the white particles as they sink assumes an intense blue colour, and the experiments of J.
Sometimes it is almost pasty, and crumbles to powder when dried, so as to be susceptible of use as a pigment, forming the colour known as Cologne earth, which resembles umber or sepia.
There are three substances which can be relied on more or less to remove this compound, and the gas to be purified may be passed either through acid copper salts, through bleaching powder or through chromic acid.
Lunge, who recommends the use of bleaching powder.
The chloride, SmCl 2, is a brown crystalline powder which is decomposed by water with liberation of hydrogen and the formation of the oxide, Sm 2 O 3, and an oxychloride, SmOC1.
Smokeless powder also made rapid firing a possibility and a necessity.
on account of the slow rate of fire imposed by black powder, the rapidity of laying conferred by its use was of no great advantage, and it was unsuited to the imperfect mechanical arrangements of the gun mountings of the time.
When cordite replaced black powder, and the gun sights and all in front of the gun were no longer obscured by hanging clouds of smoke, it became a desideratum, and, as the automatic sight, it was reintroduced by Sir G.
The protoxide, OsO, is obtained as a dark grey insoluble powder when osmium sulphite is heated with sodium carbonate in a current of carbon dioxide.
Osmium dichloride, OsC1 21 is obtained as a dark coloured powder when the metal is heated in a current of chlorine.
A first-class arsenal, which can renew the materiel and equipment of a large army, embraces a gun factory, carriage factory, laboratory and small-arms ammunition factory, small-arms factory, harness, saddlery and tent factories, and a powder factory; in addition it must possess great store-houses.
Under B - Gun factory, carriage factory, laboratory, small-arms factory, harness and tent factory, powder factory, &c. In a secondclass arsenal there would be workshops instead of these factories.
The metal was obtained by Berzelius as an iron-grey powder by heating potassium zirconofluoride with metallic potassium.
For its extraction from zircon the mineral is heated and quenched in water to render it brittle, and then reduced to a fine powder, which is fused with three to four parts of acid potassium fluoride in a platinum crucible.
in diameter, has a little lycopodium powder introduced, and the powder is allowed to run all along the tube, which is then fixed horizontally.
He was certain that war with Spain was inevitable, and he did much to prepare the navy for hostilities, framing an important personnel bill, collecting ammunition, getting large appropriations for powder and ammunition used in improving the marksmanship of the navy by gunnery practice, buying transports and securing the distribution of ships and supplies (especially in the Pacific) in such a way that, when hostilities were declared, American naval victories would be assured.
He was arrested on the spot, and when his lodgings were searched a quantity of powder and shot was found, with the rules of a secret society, called" Young England,"whose members were pledged to meet," carrying swords and pistols and wearing crape masks."These discoveries raised the surmise that Oxford was the tool of a widespread Chartist conspiracy - or, as the Irish pretended, of a conspiracy of Orangemen to set the duke of Cumberland on the throne; and while these delusions were fresh, they threw well-disposed persons into a paroxysm of loyalty.
The coal is all in the form of brown lignite and is not very valuable as a fuel, as it soon crumbles into a fine powder on being exposed to air.
They bought practically all of what is now Essex county from the Indians for "fifty double hands of powder, one hundred bars of lead, twenty axes, twenty coats, ten guns, twenty pistols, ten kettles, ten swords, four blankets, four barrels of beer, ten pairs of breeches, fifty knives, twenty horses, eighteen hundred and fifty fathoms of wampum, six ankers of liquor (or something equivalent), and three troopers' coats."
It is permanent when dry; on heating to 130° C. it loses water and gives the anhydrous dioxide as an unstable, pale buff-coloured powder, very sparingly soluble in water.
Calcium fluoride, CaF2, constitutes the mineral fluor-spar, and is prepared artificially as an insoluble white powder by precipitating a solution of calcium chloride with a soluble fluoride.
Calcium monosulphide, CaS, a white amorphous powder, sparingly soluble in water, is formed by heating the sulphate with charcoal, or by heating lime in a current of sulphuretted hydrogen.
Ammonium bicarbonate, NH 4 ï¿½HCO 3, is formed as shown above and also by passing carbon dioxide through a solution of the normal compound, when it is deposited as a white powder, which has no smell and is only slightly soluble in water.
The normal phosphate, (NH4)3P04,is obtained as a crystalline powder, on mixing concentrated solutions of ammonia and phosphoric acid, or on the addition of excess of ammonia to the acid phosphate (NH 4) 2 HPO 4.
Sal ammoniac (ammonium chloride, British and United States pharmacopoeiae) as used in medicine is a white crystalline odourless powder having a saline taste.
Barbara at Kutna Hora, the royal castle of Karluv Tyn, the Powder Tower, the church of St.
The anhydrous salt is a colourless powder or porous mass, having an alkaline taste and reaction.
On exposure, it loses water and gives the monohydrate, Na2C03 H20, a white powder sold as "crystal carbonate"; this substance, which is also formed on heating the decahydrate to 34°, crystallizes in the rhombic system.
(4) Soda tartarata (Rochelle salt), a tartrate of sodium and potassium, from which is made pelvis sodae tartaratae effervescens, known as Seidlitz powder.
The calculation of the stress in the various parts of the gun due to the powder pressure is dealt with in the article Ordnance.
Interior Ballistics The investigation of the relations connecting the pressure, volume and temperature of the powder-gas inside the bore of the gun, of the work realized by the expansion of the powder, of the V FIG.
3 by the height AH, such that the rectangle Ahkb is equal to the area Apdb; and the M.E.P. multiplied by 41rd 2, the cross-section of the bore in square inches, gives in tons the mean effective thrust of the powder on the base of the shot; and multiplied again by 1, the length in inches of the travel AB of the shot up the bore, gives the work realized in inch-tons; which work is thus equal to the M.E.P. multiplied by 41+-d 2 l = B -C, the volume in cubic inches of the rifled part AB of the bore, the difference between B the total volume of the bore and C the volume of the powder-chamber.
As a preliminary step to the determination of the pressure in the bore of a gun, it is desirable to measure the pressure obtained by exploding a charge of powder in a closed vessel, varying the weight of the charge and thereby the density of the powder-gas.
also experimented on the pressure of powder and the velocity of the bullet in a musket barrel; this he accomplished by shortening the barrel successively, and measuring the velocity obtained by the ballistic pendulum; thus reversing Noble's procedure of gradually lengthening the gun.
8 and 9, in a curve showing the relation between p and D the gravimetric density, which is the specific gravity of the P lb of powder when filling the volume C, cub.
G.) of the powder filling a given volume in a state of gas, and the specific gravity of the separate solid grain or cord of powder.
Thus if a charge of P lb of powder is placed in a chamber of volume C cub.
Carbon powder compressed into a rod was slowly passed through a tube in which it was subjected to the action of one or more electric arcs.
Quinone-chlorimide, C1N : C 6 H 4: 0, is obtained when paraaminophenol is oxidized with bleaching powder.
It is a dark yellow powder, which fuses at a high temperature, the liquid on cooling depositing shining tabular crystals; at a white heat it loses oxygen and yields the monoxide.
When hydrochloric acid gas is passed into the solution the salt is completely precipitated as a fine powder.
THERMIT - Thermit is a mixture of aluminium powder and iron oxide.
Later magnesium powder or ribbon was used, being set off in the same way.
The peroxide, Pr 4 O 7, forms a dark brown powder, and is obtained by ignition of the oxalate or nitrate.
In 1778 he proposed a new method of making calomel and powder of algaroth, and he got molybdic acid from mineral molybdaena nitens which he carefully distinguished from ordinary molybdena (plumbago or black lead of commerce).
If the powder of a transparent substance is immersed in a liquid of the same refractive index, the mixture becomes transparent and a measurement of the refractive index of the liquid gives the refractivity of the powder.
Christiansen found, in an investigation of this kind, that the refractivity of the liquid could only be got to match that of the powder for mono-chromatic light, and that, if white light were used, brilliant colour effects were obtained, which varied in a remarkable manner when small changes occurred in the refractive index of the liquid.
These effects are due to the difference in dispersive power of the powder and the liquid.
miihle), the term given to the apparatus or machinery used in the grinding of corn into flour, and hence applied to similar mechanical devices for grinding, crushing to powder, or pulping other substances, e.g.
It is a dark blue powder with a marked coppery lustre.
During the Civil War Augusta was the seat of extensive military factories, the tall chimney of the Confederate powder mills still standing as a memorial.
He had just arrived on the spot and met a man going to fetch powder to blow in a door; instead Hodson, with his usual recklessness, rushed into the doorway and was shot.
On Powder House Hill (originally Quarry Hill), in Nathan Tufts Park, there still stands an interesting old slate-stone powder house, a circular building, 30 ft.
high, with a conical cap, originally built (about 1703) for a windmill, deeded in 1747 to the Massachusetts Bay Colony, used in1756-1822as a powder house, and now marked by a bronze tablet erected by the Massachusetts Society of the Sons of the Revolution; on the 1st of September 1774, General Gage seized 250 half-barrels of powder stored here in anticipation of the outbreak of hostilities; in 1775 the powder house became the magazine of the American forces besieging Boston, and at that time Nathanael Greene maintained his headquarters at the Samuel Tufts House, and Charles Lee had his headquarters at the Oliver Tufts House, in Somerville.
The fire reached the powder and the flagship blew up, sending the Capitan Pasha and 2000 Turks into the air.
Wohler reduced the sesquioxide by zinc, and obtained a shining green powder of specific gravity 6.81, which tarnished in air and dissolved in hydrochloric acid and warm dilute sulphuric acid, but was unacted upon by concentrated nitric acid.
In the amorphous state it is a dull green, almost infusible powder, but as obtained from chromium oxychloride it is deposited in the form of dark green hexagonal crystals of specific gravity 5 2.
Chromic sulphide, Cr2S3, results on heating chromium and sulphur or on strongly heating the trioxide in a current of sulphuretted hydrogen; it forms a dark green crystalline powder, and on ignition gives the sesquioxide.
By passing ammonia over heated chromic chloride, the nitride, CrN, is formed as a brownish powder.
It is an orange crystalline powder which is soluble in water, forming a yellow solution.
It is precipitated from hot solutions by alcohol, falling as a white powder.
The yarns are chiefly used by manufacturers of powder bags.
The prosperity of the town depends on the important works in its vicinity, including powder works, paper mills, and engineering, iron, chemical and cement works.
It is a non-volatile and almost infusible white powder, which slowly absorbs moisture and carbon dioxide from air, and is readily soluble in dilute acids.
It is a white amorphous powder, readily soluble in acids.
In the southern part of the city is a United States navy yard and station, officially the Norfolk Yard (the second largest in the country), of about 450 acres, with three immense dry docks, machine shops, warehouses, travelling and water cranes, a training station, torpedoboat headquarters, a powder plant (20 acres), a naval magazine, a naval hospital and the distribution headquarters of the United State Marine Corps.
To ensure this being properly done, the lumps of lime should be broken up small, and enough water to slake them should be added, the lime then being allowed to rest for about forty-eight hours, when the water changes the particles of quicklime to hydrate of lime, and breaks up the hard lumps into a powder.
They may be dried so thoroughly that they can easily be reduced to powder yet their vitality is not destroyed but only suspended; on being supplied with water they absorb it rapidly by their general surface and renew their activity.
The substances used as tests in these reactions are caustic potash and calcium hypochlorite; the former being the substance dissolved in an equal weight of water and the latter a saturated extract of bleaching powder in water.
From their supposed aptitude to imbibe and retain odours, their powder was the basis of various perfumes, such as the celebrated " Poudre de Cypre " of the hairdressers, but their employment in this respect has long since been abandoned.
One of the most useful nutritious species is Cetraria islandica, " Iceland moss," which, after being deprived of its bitterness by boiling in water, is reduced to a powder and made into cakes, or is boiled and eaten with milk by the poor Icelander, whose sole food it often constitutes.
Contaminated as it was with potassium and with platinum from the crucible, the metal formed a grey powder and was far from pure; but in 1845 he improved his process and succeeded in producing metallic globules wherewith he examined its chief properties, and prepared several compounds hitherto unknown.
Alumina is obtained as a white amorphous powder by heating aluminium hydroxide.
This powder, provided that it has not been too' strongly ignited, is soluble in strong acids; by ignition it becomes denser and nearly as hard as corundum; it fuses in the oxyhydrogen flame or electric arc, and on cooling it assumes a crystalline form closely resembling the mineral species.
Thus Abraham Danzig celebrated in this manner his escape from the results of an explosion of a powder magazine at Wilna in 1804.
Araroba Powder >>
After suffering many vicissitudes and being partially destroyed more than once, it was restored - including especially the splendid entrance tower by Antonio Averulino (Filarete, 1 45 1 - 1 453), destroyed by a powder explosion in 1521 - in the 15th-century style 1 See F.
Butler approached the fort on the 10th of December 1864; on the 24th the "Louisiana," loaded with 215 tons of powder, was exploded 400 yds.
Such ferns as Gymnogrammes, which have their surface covered with golden or silver powder, and certain species of scaly-surfaced Cheilanthes and Nothochlaena, as they cannot bear to have their fronds wetted, should never be syringed; but most other ferns may have a moderate sprinkling occasionally (not necessarily daily), and as the season advances, sufficient air and light must be admitted to solidify the tissues.
Destroy aphides and other insects by syringing with tobacco water, or by fumigating, or by dusting with tobacco powder.
The cushions were greased and the amalgam in a state of powder spread over them.
In the preparation of chloroform by the action of bleaching powder on ethyl alcohol it is probable that the alcohol is ..rst oxidized to acetaldehyde, which is subsequently chlorinated and then decomposed.
In the Carboniferous Limestone series, the purer kinds of limestone are used for the manufacture of lime, bleaching powder and similar products, also as a flux in the smelting of iron; some of the less pure varieties are used in making cement.
In 1827 he obtained metallic aluminium as a fine powder, and in 1845 improved methods enabled him to get it in fully metallic globules.
7 - trisulphonic acid, is an orange-yellow powder which dyes wool and silk yellow (from an acid bath).
Drops of Slag Props of Iron Layer of Molten Slag- -- --:€___ Layer of Molten Iron--- * The ore and lime actually exist here in powder.
Sandmeyer, Ber., 1884, 17, p. 2650), or with copper powder (L.
By diazotizing para-chloraniline and adding a cold solution of potassium cyanide, a salt (melting at 29° C.) is obtained, which readily loses nitrogen, and forms parachlorbenzonitrile on the addition of copper powder.
By dissolving this diazocyanide in alcohol and reprecipitating it by water, it is converted into the isomeric diazocyanide (melting at 105-106° C.), which does not yield para-chlorbenzonitrile when treated with copper powder.
By the action of bleaching powder on methylamine hydrochloride, there is obtained a volatile liquid (methyldichloramine, CH 3 -N C1 2), boiling at 58-60° C., which explodes violently when heated with water, yielding hydrocyanic acid (CH 3 NC1 2 =HCN+2HC1).
There are numerous preparations, patent and pharmacopeial, their composition being extremely varied, so that, unless one has reason to be certain of any particular preparation, it is almost better to use only the dried leaves themselves in the form of a powder (dose a-z grains).
In 1380-1381 at an inquisition into the liberties of Corfe Castle, the jurors declared that from time immemorial the constable and his steward had held all pleas and amerciaments except those of the mayor's court of Pie Powder, but that the town had judgment by fire, water and combat.
The streak, or colour of the powder, is brownish or light yellow, rarely white.
Lanthanum oxide, La203, is a white powder obtained by burning the metal in oxygen, or by ignition of the carbonate, nitrate or sulphate.
It combines with water with evolution of heat, and on heating with magnesium powder in an atmosphere of hydrogen forms a hydride of probable composition La 2 H 3 (C. Winkler, Ber.
Lanthanum hydroxide, La(OH) 3, is a white amorphous powder formed by precipitating lanthanum salts by potassium hydroxide.
Lanthanum sulphide, La 2 S 3, is a yellow powder, obtained when the oxide is heated in the vapour of carbon bisulphide.
Beryllium oxide, beryllia or glucina, BeO, is a very hard white powder which can be melted and distilled in the electric furnace, when it condenses in the form of minute hexagonal crystals.
provided that there should be a mayor and II aldermen, 36 free burgesses, 4 fairs and a court of pie powder.
The eyes, with very few exceptions, are black, large and of a long almond-form, with long and beautiful lashes, and an exquisitely soft, bewitching expressioneyes more beautiful can hardly be conceived: their charming effect is much heightened by the concealment of the other features (however pleasing the latter may be), and is rendered still more striking by a practice universal among the females of the higher and middle classes, and very common among those of the lower orders, which is that of blackening the edge of the eyelids both above and below the eye, with a black powder called kohl (Lane, Modern Egyptians).
Probably the first lorming was done by chipping and hammer-dressing, as in later times; the final facing of the hard stones was doubtless by sieans of emery in block or powder, as emery grinding blocks tre found.
Long saws of copper were fed with emery powder, and used to saw out blocks as much as 7~ ft.
which a ieee of a copper saw has been broken, and where may be yet found large chips of emery, too long and coarse to serve as a powder, but suited for fixed teeth.
A similar method was common for circular holes, which were cut by a tube, either with powder or fixed teeth.
The same afternoon the guards in the streets and on the ramparts were doubled; on the following morning the gates of the city were closed, powder and bullets were distributed among the city train-bands, who were bidden to be in readiness when the alarm bell called them, and cavalry was massed on the environs of the city.
At the upper end the raw material is fed in either as a dry powder or as a slurry; at the lower end is a powerful burner.
Thallous bromide, TIBr, is a light yellow crystalline powder; it is formed analogously to the chloride.
Thallic oxide, T1203, is obtained as a dark reddish powder, insoluble in water and alkalis, by plunging molten thallium into oxygen, or by electrolysing water, using a thallium anode.
Lachmann, Ann., 1895, 288, p. 281), is a crystalline powder, soluble in water, and which decomposes on heating.
On the left the prince's men could not load their pieces, their powder being ruined by the tempestuous rain.
It may also be obtained by heating manganese dioxide or potassium bichromate or potassium permanganate with sulphuric acid; by the action of cobalt salts or manganese dioxide on a solution of bleaching powder (Th.
It is a dark coloured powder of specific gravity 5.09.
It is a reddish-brown powder, which when heated with hydrochloric acid yields chlorine.
In the hydrated condition it is a dark brown powder which readily loses water at above too° C., it dissolves in hot nitric acid, giving manganous nitrate and manganese dioxide: 2MnO(OH) + 2HNO 3 = Mn(NO 3) 2 + MnO 2 + 2H 2 0.
It is a dark brown powder, which reddens litmus.
Manganous Carbonate, MnCO 3, found native as manganese spar, may be prepared as an amorphous powder by heating manganese chloride with sodium carbonate in a sealed tube to 150° C., or in the hydrated form as a white flocculent precipitate by adding sodium carbonate to a manganous salt.
The excess of acid is removed by spreading the mass on a porous plate, the residue stirred for some hours with nitric acid, again spread on a porous plate, and finally dried quickly at about 130° C. It is a dark green deliquescent powder which decomposes on heating or on exposure to moist air.
The wood affected shrivels up and becomes reduced after a time to a fine brown powder.
In this way the disease is spread rapidly, continually eating into the timber, which is first rendered brittle, and then reduced to powder.
884) obtained it by heating the dioxide with magnesium powder.
It is a bluish-green powder, which on exposure rapidly combines with the oxygen of the air.
It is a white powder of specific gravity 3.912, easily soluble in cold water.
"Oil of mace," or nutmeg butter, is a solid fatty substance of a reddish-brown colour, obtained by grinding the refuse nutmegs to a fine powder, enclosing it in bags and steaming it over large cauldrons for five or six hours, and then compressing it while still warm between powerful wedges, the brownish fluid which flows out being afterwards allowed to solidify.
absorption becomes slow, the gas is cut off and the chamber is left to itself for twelve hours or more, when it will be found that all the chlorine has been taken up. Now the door of the chamber is opened, the powder lying at the bottom is turned over and the treatment with gas is repeated.
The dried or " finished " soda-ash is ground to a pretty fine powder and is packed into wooden casks or " tierces," holding from io to about 20 cwt.
verandas, of no particular style of architecture, while the Protestant cathedral was formerly a powder magazine, to which a tower and spire have been added.
A week later some hundreds of insurgents attacked the powder magazine at San Juan del Monte, but were completely routed.
From Morphinae Acetas, a white soluble amorphous powder, is made Liquor Morphinae Acetatis, strength 1% or 44 grs.
From Morphinae Tartras, a white crystalline powder, are prepared, Injectio Morphinae Hypodermica, containing 5% of morphine tartrate, and Liquor Morphinae Tartratis.
Morphinae Sulphatis is not official in the British Pharmacopeia but is official in the United States, the U.S.P. Trochisci Morphinae et Ipecacuanhae and Pulvis Morphinae Cornpositus (Tully's powder) being made from it.
His services to industry included his improvements in the processes for the manufacture of sulphuric acid (1818) and oxalic acid (1829); methods of estimating the amount of real alkali in potash and soda by the volume of standard acid required for neutralization, and for estimating the available chlorine in bleaching powder by a solution of arsenious acid; directions for the use of the centesimal alcoholometer published in 1824 and specially commended by the Institute; and the elaboration of a method of assaying silver by a standard solution of common salt, a volume on which was published in 1833.
It is an amorphous white powder; but it may also be obtained in crystals isomorphous with cassiterite by heating the amorphous form with borax to a very high temperature.
Thorium fluoride, ThF 4, is obtained as a heavy white insoluble powder by dissolving the hydrate in hydrofluoric acid and evaporating.
Potassium thorofluoride, K2ThF6 4H20, is a heavy black powder formed by boiling the hydroxide with potassium fluoride and hydrofluoric acid.
It is a green powder which becomes yellow when heated.
The hydroxide, Ni(OH) 2, is obtained in the form of a greenish amorphous powder when nickel salts are precipitated by the caustic alkalis.
It is a black powder, the composition of which is never quite definite, but approximates to the formula given above.
Chem., 1908, 60, p. 178) obtained a greyish green powder of composition N102.
The former method yields greyish, metallic-looking, microscopic crystals, the latter a grey amorphous powder.
Nickel chloride ammonia, NiC1 2.6NH3, is obtained as a white powder when anhydrous nickel chloride is exposed to the action of ammonia gas (H.
Nickel sulphate, NiSO 4, is obtained anhydrous as a yellow powder when any of its hydrates are heated.
In this method tremendous blasts of powder, sometimes twenty-five or even fifty tons, were used to loosen the gravel, which was then acted on by the jet of water thrown from the " pipes."
The colour is brass-yellow, and the lustre metallic; the streak, or colour of the powder, is greenish-black.
In the form of a powder, it is obtained by reducing the oxide with zinc and extracting with soda, or by dissolving out the manganese from its alloys with tungsten.
Tungsten dioxide, W02, formed on reducing the trioxide by hydrogen at a red heat or a mixture of the trioxide and hydrochloric acid with zinc, or by decomposing the tetrachloride with water, is a brown strongly pyrophoric powder, which must be cooled in hydrogen before being brought into contact with air.
It is a canary-yellow powder, which becomes a dark orange on heating; the original colour is regained on cooling.
The dichloride, WC1 2, is an amorphous grey powder obtained by reducing the hexachloride at a high temperature in hydrogen, or, better, by heating the tetrachloride in a current of carbon dioxide.
This gives the tetrachloride as a greyishbrown crystalline powder.
At a high temperature hydrogen reduces it to the metal partly in the form of a black pyrophoric powder.
It forms black lustrous crystals, or when quickly condensed, a dark green crystalline powder.
The dibromide, WBr 2, is a non-volatile bluishblack powder obtained by reducing the pentabromide with hydrogen.
The dioxybromide forms light red crystals or a yellow powder; it volatilizes at a red heat, and is not acted upon by water.
When dry it is a black mass which yields a liver-coloured powder.
A nitride, W2N3, is obtained as a black powder by acting with ammonia on the oxytetrachloride or hexachloride; it is insoluble in sodium hydroxide, nitric and dilute sulphuric acids; strong sulphuric acid, however, gives ammonia and tungstic acids.
Much of the state is drained by branches of the Missouri river, the most important being the Yellowstone, Bighorn and Powder rivers flowing N., and the Cheyenne and North Platte flowing E.
of the trail demanded the construction of posts, of which the most important were Fort Reno, on the Powder river, and Fort Phil Kearny in the Bighorn Mountains.
Chlorine may also be obtained by the action of dilute sulphuric acid on bleaching powder.
Chlorine is used commercially for the extraction of gold and for the manufacture of "bleaching powder" and of chlorates.
The commercial acid is usually yellow in colour and contains many impurities, such as traces of arsenic, sulphuric acid, chlorine, ferric chloride and sulphurous acid; but these do not interfere with its application to the preparation of bleaching powder, in which it is chiefly consumed.
One of the most important derivatives of hypochlorous acid is bleaching powder.
of the energy exerted by the powder in exploding will be employed in propelling the ball, and ih in producing the recoil of the gun, provided the gun up to the instant of the balls quitting the muzzle meets with no resistance to its recoil except the friction of the ball.
The return of the emperor in 1815 determined him to quit France, and he spent the close of his life with his younger son, Eleuthere Irenee (1771-1834), who had established a powder manufactory in Delaware.
Du Pont de Nemours Powder Company.
The plate was now carefully heated over charcoal fire, fresh amalgam being added, as the powder fused, upon any defective places.
When the powder had become thoroughly liquid, so as to fill all the lines, the plate was allowed to cool, and the whole surface was scraped, so as to remove the superfluous niello, leaving only what had sunk into and filled up the engraved pattern.
Our knowledge of the explosion of ordinary black powder was also greatly added to by him, and in conjunction with Sir Andrew Noble he carried out one of the most complete inquiries on record into its behaviour when fired.
Among the manufactures are zinc spelter-there are large smelters here-clay products (chiefly vitrified brick, sewer pipe and tile; the clay being obtained from a great underlying bed of shale), blasting powder, packinghouse products and planing-mill products.
He adds that the tendency is to replace those by " the hair, without powder, simply curled."
He also made many experiments with the tourmaline when cut into thin slices, and reduced to the finest powder, in which state each particle preserved its pyro-electricity; and he showed that scolezite and mesolite, even when deprived of their water of crystallization and reduced to powder, retain their property of becoming electrical by heat.
When this white powder is heated and stirred about by any substance whatever, it collects in masses like new-fallen snow, and adheres to the body with which it is stirred.
He discovered that they had the power of affecting the electric conductivity of materials when in a state of powder, the majority of metallic filings increasing in conductivity.
A hydrated cuprous oxide, (4Cu 2 O, H 2 0), is obtained as a bright yellow powder, when cuprous chloride is treated with potash or soda.
Cupric oxide, CuO, occurs in nature as the mineral melaconite (q.v.), and can be obtained as a hygroscopic black powder by the gentle ignition of copper nitrate, carbonate or hydroxide; also by heating the hydroxide.
Copper quadrantoxide, Cu 4 0, is an olive-green powder formed by mixing well-cooled solutions of copper sulphate and alkaline stannous chloride.
Copper dioxide, CuO 2 H 2 O, is obtained as a yellowish-brown powder, by treating cupric hydrate with hydrogen peroxide.
The hydrated form, (CuF 21 2H 2 O, 5HF),is obtained as blue crystals, sparingly soluble in cold water; when heated to 100° C. it gives the compound CuF(OH), which, when heated with ammonium fluoride in a current of carbon dioxide, gives anhydrous copper fluoride as a white powder.
It dissolves in the excess of acid, and is precipitated as a white crystalline powder on the addition of water.
It is a brown deliquescent powder, which rapidly forms the green hydrated salt CuC1 21 2H 2 0 on exposure.
" Brunswick green," a light green pigment, is obtained from copper sulphate and bleaching powder.
Cuprous iodide, Cu 2 l 21 is obtained as a white powder, which suffers little alteration on exposure, by the direct union of its components or by mixing solutions of cuprous chloride in hydrochloric acid and potassium iodide; or, with liberation of iodine, by adding potassium iodide to a cupric salt.
Cuprous sulphite, CuS0 3 H 2 O, is obtained as a brownish-red crystalline powder by treating cuprous hydrate with sulphurous acid.
A maroon-coloured powder, of composition CuN02, is formed when pure dry nitrogen dioxide is passed over finelydivided copper at 25 0 -30 0.
The tannin of oak, C/9H16010, which is found, mixed with gallic acid, ellagic acid and quercite, in oak bark, is a red powder; its aqueous solution is coloured dark blue by ferric chloride, and boiling with dilute sulphuric acid gives oak red or phlobaphene.
It forms a crystalline powder which melts at 213° C. It is insoluble in alcohol, and nearly insoluble in cold water.
The former generally consists of a hard and compact mass of rounded, scratched and sometimes polished stones firmly embedded in a powder of crushed rock.
The latter is less compact and contains angular boulders, often of a considerable size, but no powder.
By the action -of bleaching powder it is converted into chlorpicrin, CC1 3 NO 2.
The more important picric powders are melinite, believed to be a mixture of fused picric acid and gun-cotton; lyddite, the British service explosive, and shimose, the Japanese powder, both supposed to be identical with the original melinite; Brugere's powder, a mixture of 54 parts of ammonium picrate and 45 parts of saltpetre; Designolle's powder, composed of potassium picrate, saltpetre and charcoal; and emmensite, invented by Stephen Emmens, of the United States.
Barium hydroxide, Ba(OH) 2, is a white powder that can be obtained by slaking the monoxide with the requisite quantity of water, but it is usually made on the large scale by heating heavy spar with small coal whereby a crude barium sulphide is obtained.
It is a white powder moderately soluble in cold water, readily soluble in hot water, the solution possessing an alkaline reaction and absorbing carbon dioxide readily.
It is a grey coloured powder which is readily decomposed by dilute acids with the production of hydrogen peroxide.
It is a white powder which is readily decomposed by water with the formation of the hydroxide and hydrosulphide.
Barium carbonate, BaCO 31 occurs rather widely distributed as witherite, and may be prepared by the addition of barium chloride to a hot solution of ammonium carbonate, when it is precipitated as a dense white powder of specific gravity 4.3; almost insoluble in water.
The commonest are senna in the form of compound liquorice powder, sulphur in the form of lozenges, cascara sagrada, either in tablets or in the form of liquid or dry extract, rhubarb, colocynth and especially aloes.
It has two Evangelical churches (among them that of St Mary, dating from 13th century), two ancient gateways, a powder tower and a gymnasium.
It is a white powder, almost insoluble in water, and when volatilized, condenses in two crystalline forms, either octahedral or prismatic. It is insoluble in sulphuric and nitric acids, but is readily soluble in hydrochloric and tartaric acids and in solutions of the caustic alkalies.
The corresponding hydroxide, orthoantimonious acid, Sb(OH) 31 can be obtained in a somewhat impure form by precipitating tartar emetic with dilute sulphuric acid; or bet::er by decomposing antimonyl tartaric acid with sulphuric acid and drying the precipitated white powder at too° C. Antimony tetroxide is formed by strongly heating either the trioxide or pentoxide.
It is a nonvolatile white powder, and has a specific gravity of 6.6952; it is insoluble in water and almost so in acids - concentrated hydrochloric acid dissolving a small quantity.
It is a pale yellow powder (of specific gravity 6.5), which on being heated strongly gives up oxygen and forms the tetroxide.
It is a white powder almost insoluble in water and nitric acid, and when heated, is first converted into metantimonic acid, HSbO 3, and then into the pentoxide Sb205.
Fremy), is obtained by decomposing antimony pentachloride with hot water, and drying the precipitate so obtained at 100° C. It is a white powder which is more soluble in water and acids than orthoantimonic acid.
It is a white powder almost insoluble in water.
It is soluble in alcohol and in carbon bisulphide, and also in a small quantity of water; but with an excess of water it gives a precipitate of various oxychlorides, known as powder of algaroth.
It is a white powder insoluble in water, alcohol and ether.
It forms a fine dark orange powder, insoluble in water, but readily soluble in aqueous solutions of the caustic alkalis and alkaline carbonates.
Attempts to get a pure toxin by repeated precipitation and solution have resulted in the production of a whitish amorphous powder with highly toxic properties.
Such a powder gives a proteid reaction, and is no doubt largely composed of albumoses, hence the name toxalbumoses has been applied.
The bark has been employed for dyeing yellow and for tanning, and was formerly in popular repute as a febrifuge and tonic. The powder of the dried nuts was at one time prescribed as a sternutatory (to encourage sneezing) in the Edinburgh Pharmacopoeia.
Duxbury has a public library, and is the seat of the Powder Point school for boys, and Partridge Academy, founded in 1828 by a bequest of $io,000 from George Partridge of Duxbury, and incorporated in 1830.
Under the name of anti-opium cure various remedies containing morphine in the form of powder, or of little pills, have been introduced, as well as the subcutaneous injection of the alkaloid, so that the use of morphine is increasing in China to an alarming extent, and considerable difficulty is experienced in controlling the illicit traffic in it, especially that sent through the post.
A Dover's powder, also, is hardly to be surpassed in the early stages of a bad cold in the head or bronchitis.
When crystallized, however, haematite often presents a dark colour, even iron-black; but on scratching the surface, the powder of the streak shows the colour of dried blood.
Molecular silver is a grey powder obtained by leaving metallic zinc in contact with silver chloride which has been precipitated in the cold and washed till nearly free from acid.
The powder is separated from the zinc, washed with hydrochloric acid, dried in the air, and then gently heated to 150°.
The silver in this case is obtained as a yellowish grey heavy powder, which is easily washed by decantation; but it' tends to retain unreduced chloride, which can be removed only by fusion with carbonate of soda.
It is obtained as a light yellow powder by dissolving the metal in hydriodic acid, or by precipitating a silver salt with a soluble iodide.
It forms with silver nitrate the yellowish green solid, Ag 2 S AgNO 3, and with silver sulphate the orange-red powder, Ag 2 S Ag 2 SO 4 Silver sulphate, Ag 2 SO 4, is obtained as white crystals, sparingly soluble in water, by dissolving the metal in strong sulphuric acid, sulphur dioxide being evolved, or by adding strong sulphuric acid to a solution of the nitrate.
Fulminating silver is an extremely explosive black powder, first obtained in 1788 by Berthelot, who acted with ammonia on silver oxide (prepared by adding lime water to a silver solution).
common process was to sew up the seal in a bag or piece of cloth or canvas, with the mistaken notion that this would ensure the seal's integrity; the ordinary result being that, on the assumption that seals thus protected needed no further care, they have been in most instances either broken or crushed to powder.
molde, from a Teutonic root meaning to grind, reduce to powder, cf.
It is a brickred powder which explodes when heated to 130° C. Selenium cyanide, Se(CN) 2, is obtained by decomposing silver selenocyanide with cyanogen iodide, or by the action of silver cyanide on a solution of selenium bromide in carbon bisulphide.
Another method consists in mixing the powdered bark with milk of lime, drying the mass slowly with frequent stirring, exhausting the powder with boiling alcohol, removing the excess of alcohol by distillation, adding sufficient dilute sulphuric acid to dissolve the alkaloid and throw down colouring matter and traces of lime, &c., filtering, and allowing the neutralized liquid to deposit crystals.
It occurs in a colourless crystalline powder, having the formula C20H24N202.2HC1.3H20.
It is a white powder which readily dissolves in water to form the hydroxide, LiOH, which is also obtained by boiling the carbonate with milk of lime.
It is a dark red microcrystalline powder, insoluble in carbon bisulphide, oil of turpentine, &c., and having a density of 2.2.
117) as a scarlet amorphous powder by deposition of solutions of phosphorus in the tri-iodide, tribromide or sulphide (P 4 S 3).
By passing the products of the decomposition of calcium phosphide with water over granular calcium chloride, the P 2 H 4 gives a new hydride, P1.2H6 and phosphine, the former being an odourless, canary-yellow, amorphous powder.
It is a yellow or red powder which becomes dark red on heating; it is stable in air, and can be heated to 300° without decomposition.
On the opposite bank stands the picturesque hamlet of Obilichevo, with a large powder factory.
The Celetna ulice, which leads from the town hall to the limits of the old town contains at its extremity the so-called powder tower (prasna brcina).
The powder tower stands at the corner of the Pfikopy (in Ger.
The chief tributaries of the Snake river in Oregon are the Grand Ronde, Powder, Burnt, Malheur and Owyhee rivers.
Bleaching powder oxidizes it to chlorcarbostyril.
long, and from 1 to 4 lines broad, and have two lateral furrows, a close fracture, a disagreeable rancid taste, and a faint, fishy odour, which last becomes more perceptible when the powder of, the drug is mixed with potash solution.
The perfectly pure metal may be prepared by heating the oxide or oxalate in a current of hydrogen; when obtained at a low temperature it is a black powder which oxidizes in air with incandescence; produced at higher temperatures the metal is not pyrophoric. Peligot obtained it as minute tetragonal octahedra and cubes by reducing ferrous chloride in hydrogen.
Ferrous oxide is obtained when ferric oxide is reduced in hydrogen at 300 as a black pyrophoric powder.
It may also be prepared as a black velvety powder which readily takes up oxygen from the air by adding ferrous oxalate to boiling caustic potash.
Ferrous hydrate, Fe(OH)2, when prepared from a pure ferrous salt and caustic soda or potash free from air, is a white powder which may be preserved in an atmosphere of hydrogen.
Ferric oxide or iron sesquioxide, Fe203, constitutes the valuable ores red haematite and specular iron; the minerals brown haematite or limonite, and gothite and also iron rust are hydrated forms. It is obtained as a steel-grey crystalline powder by igniting the oxide or any ferric salt containing a volatile acid.
When finely ground these crystals yield a brownish red powder which dissolves slowly in acids, the most effective solvent being a boiling mixture of 8 parts of sulphuric acid and 3 of water.
By heating solutions of certain iron salts for some time and then adding a little sulphuric acid it is precipitated as a brown powder.
Barium ferrate, BaFeO4H20, obtained as a dark red powder by adding barium chloride to a solution of potassium ferrate, is fairly stable.
By gently heating in a vacuum to 140°, the hepta-hydrate loses 6 molecules of water, and yields a white powder, which on heating in the absence of air gives the anhydrous salt.
Ferrum redactum, reduced iron, a powder containing at least 75% of metallic iron and a variable amount of oxide.
Ferri sulphas exsiccatus, which has two subpreparations: (a) Pilula ferri, " Blaud's pill " (exsiccated ferrous sulphate 150, exsiccated sodium carbonate 95, gum acacia 50, tragacanth 15, glycerin 10, syrup 150, water 20, each to contain about I grain of ferrous carbonate); (b) Pilula aloes et ferri (Barbadoes aloes 2, exsiccated ferrous sulphate I, compound powder of cinnamon 3, syrup of glucose 3).
The carbonate forms about one-third and is mixed with sugar into a greyish powder.
Ferri arsenas, iron arsenate, ferrous and ferric arsenates with some iron oxides, a greenish powder.
Ferri phosphas, a slate-blue powder of ferrous and ferric phosphates with some oxide.
Carniferrin is another tasteless powder containing iron in combination with the phosphocarnic acid of muscle preparations, and contains 35% of iron.
Sicco, the name given to dry haematogen, is a tasteless powder.
Such ferns as Gymnogrammas, which have their surface covered with golden or silver powder, and certain species of scalysurfaced Cheilanthes and Nothochlaena, as they cannot bear to have their fronds wetted, should never be syringed; but most other ferns may have a moderate sprinkling occasionally (not necessarily daily) and as the season advances sufficient air and light must be admitted.
Arms and powder are also imported.
carta, for charta, paper), originally a roll of paper, parchment or other material, containing the charge of powder and shot for a firearm, a cartridge, which itself is a corruption of cartouche.
It is a grey powder which is insoluble in water, but dissolves in acids to give a lavenderblue solution which possesses strong reducing properties.
It forms a black amorphous powder or a dark green crystalline mass, and is insoluble in water and in most acids.
Pyrovanadic acid is deposited as a dark brown unstable powder when an acid vanadate is decomposed by nitric acid.
Gain (Comptes rendus, 1906, 1 43, p. 823) by calcining ammonium metavanadate and saturating a solution of the resulting oxides with sulphur dioxide; the resulting blue solution (from which a sulphate of composition 2V 2 0 4.3S0 2.10H 2 O can be isolated) is then boiled with water, when sulphur dioxide is liberated and a pale red crystalline powder of hypovanadic acid, H4V205, is precipitated.
It is brittle, and when hammered readily breaks up into a powder of angular grains.
But on the 26th of May the Venetians were forced to abandon Fort Malghera, half-way between the city and the mainland; food was becoming scarce, on the 19th of June the powder magazine blew up, and in July cholera broke out.
Arsenic forms two hydrides: - The dihydride, As2H2, is a brown velvety powder formed when sodium or potassium arsenide is decomposed by water.
Arsenic phosphide, AsP, results when phosphine is passed into arsenic trichloride, being precipitated as a red-brown powder.
during the periodical revolts of the Ligois against their prince-bishop, set the powder alight.
The numerous small lakes in the city (there are about 200 lakes in Hennepin county) have been incorporated in the park system; among them are Lake Harriet (353 acres; in Lake Harriet Park), Lake Calhoun (on which are extensive public baths), Lake Amelia (295 acres), Lake of the Isles (loo acres), Cedar Lake, Powder Horn Lake (in the park of that name) and Sandy Lake (in Columbia Park).
They live frugally, and are only prodigal in powder and human life.
The spark was put to the powder by the action of the war minister, General Linares, in proposing to organize a new field force by calling out the Catalan reserves.
In 1775 Revere was sent by the Massachusetts provincial congress to Philadelphia to study the working of the only powder mill in the colonies, and although he was allowed only to pass through the building, obtained sufficient information to enable him to set up a powder m